Ash-sifter.



No. 627,768. Patented lun'e' 275-1899; 0. F. ABBOTT.

ASH SIFTER.

(Application filed Mar. 15, 1 897.)

(No Model.) 2 Sheets-Sheet I.

WITNESSES:

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(No Model.)

0. F. ABBOTT.

ASH SIFTER.

(Application filed Mar. L5, 1697.)

2 sheets shet 2.

we NDRRKS PtTzns ca. mmoumm, wmnmarou. a. c.

Patehted lune27, I899.

U E rams "ATENT OFFICE.

CARY F. ABBOTT, OF CHICOPE E, MASSACHUSETTS.

ASH-SIFTER.

' SPECIFICATION forming part of Letters Patent No. 627,768, dated June27, 1899.

I 7 Application filed March 15, 1897. Serial No. 627,490. (No model.)

T (0% whom it may concern.-

Chicopee, in the State of Massachusetts, have invented certain new anduseful Improvements in Ash-Sifters, of which the following is aspecification.

This invention has relation to that class of ash-Sifters which areequipped with a foraminous cylinder adapted to be rotated within aclosed casing in such manner that the ashes may first be separated fromthe unburned coal and clinkers and taken away and the latter thencollectedand sorted, if need be, so that the unburned coal may be used.An ash-Sifter of this kind is shown and described in United StatesLetters Patent No. 4187 ,009, granted to me November 29,1892, andreference may be had to the said Letters Patent for fuller informationconcerning'my present improvements, if it is desired.

It is the object of the invention to provide improvements havingreference to the removable section or gate of the cylinder, by means ofwhich the cylinder may be filled and access thereto may be had.

It is also the object of theinvention to provide an improved outer casefor tightly inclosing the cylinder during the operation of sifting theashes, which case shall also embody a chute of enhanced serviceability,and to provide an improved can-cover which may operate jointly with thechute or case and the can or ashreceptacle.

Reference is to be had to the annexed draw-. ings and to the lettersmarked thereon, forming apart of this specification, the same lettersdesignating the same parts or features, as thecase may be, wherever theyoccur.

Of the drawings, Figure 1 is a vertical sectional view of my improvedash-Sifter complete. Fig. 2 is a perspective view of thescreening-cylinder detached, the removable section or gate beingrepresented as removed. Fig. 3 is an end view of the machine with thecase cover or lid in open position. Fig. 4 is a perspective view of theremovable section or gate of the screening-cylinder detached. Fig. 5 isa detail view of the manner of securingthe edges of the woven wire orthe like to binding-strips. Fig. 6 is a sectional detail view of.amethod of securing the edge of the can-cover to the lower edge of thechute.

v Figs. 7, 8, and 9 show difierent methods of Be it known that I, CARYF. ABB'OTT, of

attaching the woven wire of the cylinder to the heads thereof.

In the drawings, a designates the outer in-' closing case, the bodyportion of which may be made of galvanized or other suitable sheet metaland of cylindrical form, in the ends of which are secured the heads I)b, which may be of wood and to which the supporting-legs 0 may besecured.

d is the sifting or screening cylinder, the body part of which iscomposed ofv woven wire, while the ends 6 e are made from sheet metal,so as to render them fireproof. The saidscreening-cylinderis made to berevolved within the casing a by means of the crank j, which has abearing g in the head I), the inner end of the journal part h of thecrank being screw-threaded and turnedin the screwthreaded socket formedin the hub 2', conextends a journal-stud m, formed on the inner end of aheaded bolt provided near its base with ribs, which bolt is forced intoa hole formed in the end 1) of thecase, the ribs on the bolt, with thescrews passed through its head and tapped into the casing-head b,serving to hold the journal-stud against turning.

The upper part of the casing is provided with a hinged lid or door 12,by which access may be gained to the'case, and a hasp or button (notshown) maybe provided to keep the lid closed while the sifting of ashesis in progress.

The screening or sifting cylinder d is also provided with a removablesection or gate 0. (Shown detached in Fig. a.) The edges of the wovenwire composing the body of the cylinder (Z on opposite'sides of theopening where the gate 0 is placed are bound by'strips of metal 1) p,which are folded over, so thattheir meeting edges will lie in thesame'plane with the edge of the woven wire composing the body of thecylinder embraced by the folds of the strip of metal, as isclearlyrepresente d in Fig. 5.

With the parts in the position just described rivets or similar devicesare passed through the folds of sheet metal and through the inclosededge of woven wire, so as to firmly secure the parts in place. The edgesand ends of the woven-wire part q of the gate 0 are similarly bound bystrips of sheet metal q (l (1 as is clearly represented in Fig. 4:. Oneof the ends of the strips (1 g extend beyond the binding-strip q, asindicated at r 4", which extended ends a" r are adapted to be passedunder one of the strips 19, with the projectingends r r of the strips 1resting upon the periphery of the cylinder -heads e e. When the gate isplaced upon the cylinder in this 'position, the hooks s s, pivoted uponthe inner side of the ends c e of the cylinders, may be drawn over theprojecting ends 'r, and so look the gate in position on the cylinderwhen ashes are being sifted by the device.

The end edges of the woven-wire body part of the cylinder are secured tothe cylinderheads e e in one of several ways. As shown in Figs. 2 and 7,angular metallic clips t are formed, and one part of each thereof isriveted to the head, with the other angular part projecting over theperiphery of said head, to which the selvage (or it might be a folded)edge of the woven wire is riveted, the rivets in the last-mentioned casepassing through the meshes of the wire.

Another method of fastening the woven wire to the heads is by bendingthe end edges over the periphery of the heads and riveting the samethereto by rivets which extend in an axial line with the cylinder, as isshown in Fig. 8. Still another method for this purpose is shown in Fig.9, where an angular flange or rim 'u, is double-seamed on the peripheryof the heads e e, as at r, and the end edges of the woven-wire body areriveted to the said flanges or rims.

By all of these methods it is made practicable to construct the ends ofthe screening-cylinder of metal and the body part of woven wire andsecurely connect the two where required.

I have mentioned the body of the case a as being cylindrical in form. Inits lower portion along its entire length, including its heads, asegment or part is cut away, as indicated along the line to, (see Fig.3,) along which line the upper edges of the chute 0c are suitablyconnected, the sides and ends of the said chute being constructed so asto slope inward and downward, as shown.

y designates a flexible cover for the can a, which cover may be composedof felt or other suitable material bound or hem med at its inner edgearound the central opening, as at y, which hemmed edge is embraced in aturnedover edge or bead 00, formed on the lower edge of the chute x.(See the detailed Fig. 6.)

The edge of the flexible can-cover y is provided with a rim g of aweight sufficient to hold the cover down with dust-proof closeness ontop of the can z. With this construction and arrangement of parts andwith the can in position, as shown in Figs. 1 and 3, the removablesections or gate 0 of the screeningcylinder may be removed and the saidcylinder brought to such position that ashes emptied into the machine(with the case-lid in open position, as shown in Fig. 3) will bedeposited in the cylinder. Then the latter becomes sufliciently full orWhenever it is desired, the section or gate 0 will be placed in positionon the cylinder by thrusting the projecting points 7' under thebinding-strips p, with the projection r resting on the periphery of theheads 6 e and the books .9 .9 brought over the said projections to latchor hold the gate in closed position. The case-cover n will then beclosed and latched and the crank turned until the ashes are sifted, whenthe can 2 may be drawn out, the ashes emptied therefrom, and the canreturned again to place under the cover y. The case-cover will now beopened, the gate 0 removed from the screening-cylinder, and the latterturned by means of the crank, so as to dump the.unburned coal andclinkers through the chute a: into the can to be disposed of as desired.

By making the screening-cylinder entirely of iron I obviate allliability of setting fire to any part of the machine by the dumping ofhot ashes therein.

The methods described and shown of securing the woven wire to thecylinder-heads provides a very stiff, strong, and durablescreening-cylinder, and the described manner IOC of journaling thecylinder in its bearings also enhances the durability and efficiency ofthe machine. Moreover, the general construction throughout tends topromote the usefulness of the machine and to make the same more simplein and economical of construction than heretofore.

Having thus explained the nature of the invention and described a way ofconstructing and using the same, though without attempting to set forthall of the forms in which it maybe made or all of the modes of its use,it is declared that what is claimed is 1. A screening-cylinder forash-sitters comprising in its construction a Woven-Wire cylindrical bodyportion cl and heads 6 e, the woven-wire portion being provided with anopening. for the reception of the removable gate, the longitudinal edgesof said wire body at the said opening being bound with strips of metal19 p doubled thereon, and having rivets passed through the doubledportion of the strips and through the edges of the woven wire, incombination with a removable gate comprising the section 0 consisting ofwoven wire having binding-strips q (1 along its edges and ends andsecured thereto by suitable rivets, the binding-strips 1 along the sidesprojecting over the heads 6 e and the strips g projecting from one ofthe sides and adapted to extend under one of the bindingstrips 19 of thebody portion and suitable means for holding the removable gate with itsend projections resting on the peripheries of the heads I) b.

2. The combination with the outercasing 7 provided with a sheet-metalchute, of the IO ed to hang over the upper edge of the can to hold theflexible portion of the cover closely against the edges of the suitablereceptacle.

In testimony whereof I have signed my name to this specification, in thepresence of two subscribing Witnesses, this 25th day of I 5 March, A.D.,1S97.

CARY F. ABBOTT. WVitnesses:

J ENNIE T. ABBOTT,

EDE L. TILsoN.

